【High-Strength Eccentric Twist Drill Bit】Our drill bit has excellent hardness, toughness, wear resistance and impact resistance.This guarantees efficient drilling in various materials such as concrete, tiles, glass and composite materials. 【Metal Drilling Tips】 The cutting edge of the eccentric drill bit is made of YG8 tungsten-cobalt hard alloy. This material is usually used for rough machining of various cast iron workpieces by machine tools such as lathes and milling machines. It is suitable for drilling on metals with powdery iron filings. Avoid drilling on high-hardness steel plates and thick iron plates 【Quick Drilling】 Our high-strength eccentric twist drill bits are designed specifically for hand drills. They have accurate positioning and low resistance, effectively preventing drilling from slipping and deflecting. They can quickly drill holes in concrete walls, brick walls, and earthenware pots. Please avoid or use the impact function reasonably. For drilling glazed ceramics, thick rocks, and glass, adding water for cooling has a better effect. 【Drill Bit Size】The drill bit set comes in 4 different sizes, which are 1/4 inch (6mm), 5/16 inch (8mm), 3/8 inch (10mm), 1/2 inch (12mm), various sizes are suitable for different applications, helping you to meet a variety of daily needs. The drill bits are of hexagonal shank type, which is widely used and held more securely. 【Versatile Applications】CXML&DASHE Multi-purpose drill bits, you can easily machine threads in different materials. Whether it's glass, tile, or wood, our drill bit ensures sharp and burr-free threading for smoother results. Its versatility makes it a perfect choice for various DIY projects. Professional-Grade  Masonry Drill Bit Set
Tungsten Carbide Tipped
Multi-Surface Performance

🔧 Ultimate Precision for Tough Materials
Engineered for professionals and serious DIYers, our Masonry Drill Bit Set delivers unmatched durability with YG8 tungsten carbide tips – 30% harder than standard bits. Perfectly designed for:
✅ Brick
✅ Concrete
✅ Ceramic Tile
✅ Glass
✅ Marble
✅ Plastic
✅ Wood

📌 Key Features:
✔ Triple-Reinforced Carbide Tips – Shatter-resistant design withstands 10X more pressure than conventional bits
✔ Laser-Calibrated Spiral Flutes – Maintains perfect 90° drilling angle for cleaner holes
✔ YG8X Alloy Composition (94% WC, 6% Co) for extreme wear resistance
✔ Thermal Diffusion Coating – Reduces friction by 65% vs. standard bits


📌 Performance Specs:
• Optimal RPM Range: 800-2500 (Water-cooled for glass/marble)
• Shank Type: 6-Flat Anti-Slip (Fits all standard chucks)

⚠️ Expert Usage Tips:
• Always use water cooling for glass/marble (extends bit life 300%)
• Never exceed 2500 RPM (optimal range engraved on each bit)
• Critical – Start with smallest bit when drilling hard surfaces


📦 Included Sizes:

5 X 1/4"-6mm